An output power of 13.3W at 0.99 mu m wavelength was obtained in the q
uasi-continuous wave regime from a 3mm long, 100 mu m aperture InGaAs/
GaAs/InGaP SCH QW laser with broadened waveguide. A differential effic
iency of 0.72 was demonstrated at 15 degrees C for these devices with
a series resistance of 0.025<Omega.